
<fluent-page-script src="./_content/Microsoft.FluentUI.AspNetCore.Components/Components/NavMenu/FluentNavMenu.razor.js" style="display:none;"></fluent-page-script>
<div id="xxx" class="fluent-nav-menu" style="width: 100%;" role="menu" aria-expanded="" b-vs37bumpa7="" blazor:elementreference="xxx">
  <div aria-label="Navigation menu" aria-expanded="true" role="menuitem" class="fluent-nav-item expander" tabindex="0" blazor:onclick="1" blazor:onkeydown="2" b-vs37bumpa7="">
    <div class="positioning-region" b-vs37bumpa7="">
      <div class="content-region" b-vs37bumpa7="">
        <div>custom expander</div>
      </div>
    </div>
  </div>
</div>